Compensating muzzle brake (CMB) with supersonic gas stream interruption system

Abstract

FIELD: gas units.SUBSTANCE: muzzle brake-compensator (MBC) with a system for interrupting a supersonic gas flow contains a housing, annular elements connected to each other by cutting off chambers with nozzles. The nozzles are united by an internal through channel for the passage of the projectile and the gas jet. In the working area of each cut-off chamber, at least one side outlet window is located so that when the MBC is installed on the end of the weapon barrel, the side outlet windows of each chamber are oriented perpendicularly or at an angle back to the direction of the outgoing gases. EFFECT: technical result is an increase in the effectiveness of the muzzle device, a decrease in recoil and a decrease in toss when fired.

The invention claimed is: 
     
       1. A compensating muzzle brake for use with a firearm having a barrel having an internal barrel channel for passing a projectile and a gas stream in a direction of fire, the barrel channel defining a central barrel axis, and the barrel channel having a cross-sectional area, s 2 , wherein the compensating muzzle brake comprises:
 a tubular body installed or for installation on the barrel, wherein the tubular body defines: 
 an internal through channel for passing the projectile and the gas stream, wherein the through channel is aligned and continuous with the barrel channel when the tubular body is installed on the barrel; and 
 at least one internal cut-off chamber, wherein each one of the at least one cut-off chamber comprises a nozzle and at least one side port, and is terminated by a circular element such that, with the tubular body installed on the barrel:
 the nozzle defines an inlet for passing the projectile and the gas stream from the internal through channel into the cut-off chamber; wherein an inner diameter of the nozzle gradually increases along the nozzle in the direction of fire from the inlet toward the circular element; wherein a caliber of the nozzle is defined by the inner diameter the nozzle at the inlet; 
 the at least one side through outlet port is located in a side of the nozzle and oriented perpendicularly or at a non-perpendicular angle back toward the central barrel axis; wherein a total sectional area, s 1 , of the at least one side through outlet port for each one of the at least one cut-off chamber is at least twice the cross-sectional area, s 2 , of the barrel channel; 
 the circular element comprises a flat annular surface having an outer diameter of at least 2 times the caliber and having a central hole for passing the projectile and the gas stream from the cut-off chamber to the internal through channel; wherein the flat annular surface faces opposite to the direction of fire and is located opposite to the inlet of the nozzle; wherein a distance, h 1 , in the direction of fire, from the flat annular surface to the inlet of the nozzle is equal to at least the caliber; wherein the at least one side through outlet port is located, in the direction of fire, between the inlet of the nozzle and the flat annular surface; and 
 the circular element further comprises a concavely curved surface that interfaces a periphery of the flat annular surface with a peripheral end of the nozzle and provides for deflection of gas sidewards and opposite to the direction of fire and through the at least one side through outlet port. 
 
 
     
     
       2. The compensating muzzle brake of  claim 1 , wherein the at least one cut-off chamber comprises a plurality of cut-off chambers that are arranged sequentially and spaced apart, in the direction of fire, along the tubular body and interconnected by the internal through channel of the tubular body. 
     
     
       3. The compensating muzzle brake of  claim 2 , wherein the cut-off chambers are separable from each other. 
     
     
       4. The compensating muzzle brake of  claim 2 , wherein the distance, h 1 , for a first one of the plurality of the cut-off chambers differs from the distance, h 1 , for a second one of the plurality of the cut-off chambers. 
     
     
       5. The compensating muzzle brake of  claim 2 , wherein the plurality of the cut-off chambers comprises five or less cut-off chambers. 
     
     
       6. The compensation muzzle brake of  claim 5 , wherein the plurality of the cut-off chamber comprises three cut-off chambers. 
     
     
       7. The compensating muzzle brake of  claim 1 , wherein an inner surface of the nozzle has a truncated conical shape. 
     
     
       8. The compensating muzzle brake of  claim 1 , wherein the concavely curved surface comprises a toroidal surface. 
     
     
       9. The compensating muzzle brake of  claim 1 , wherein the at least one side through outlet port is oriented perpendicularly to the central barrel axis. 
     
     
       10. The compensating muzzle brake of  claim 1 , wherein the at least one side through outlet port is oriented at a non-perpendicular angle back toward the central barrel axis.